The temperature on July 30, 1884 was about 19.0 °C. The air pressure was 2 kgf/m2 and came mainly from the north-northwest. The airpressure was 77 cm mercury. The atmospheric humidity was 51%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
April 20 » Pope Leo XIII publishes the encyclical Humanum genus.
May 1 » The Federation of Organized Trades and Labor Unions demands the eight-hour work day in the United States.
June 16 » The first purpose-built roller coaster, LaMarcus Adna Thompson's "Switchback Railway", opens in New York's Coney Island amusement park.
August 5 » The cornerstone for the Statue of Liberty is laid on Bedloe's Island (now Liberty Island) in New York Harbor.
October 14 » George Eastman receives a U.S. Government patent on his new paper-strip photographic film.
October 22 » The International Meridian Conference designates the Royal Observatory, Greenwich as the world's prime meridian.
Day of marriage December 7, 1911
The temperature on December 7, 1911 was between 0.1 °C and 7.5 °C and averaged 4.5 °C. There was 3.5 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 15 » In Standard Oil Co. of New Jersey v. United States, the United States Supreme Court declares Standard Oil to be an "unreasonable" monopoly under the Sherman Antitrust Act and orders the company to be broken up.
May 31 » The President of Mexico Porfirio Díaz flees the country during the Mexican Revolution.
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
August 24 » Manuel de Arriaga is elected and sworn-in as the first President of Portugal.
September 20 » The White Star Line's RMSOlympic collides with the British warship HMSHawke.
Day of death April 9, 1947
The temperature on April 9, 1947 was between 1.1 °C and 9.4 °C and averaged 4.4 °C. There was 2.4 mm of rain during 3.5 hours. There was 7.3 hours of sunshine (54%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the northwest. Source: KNMI
February 10 » The Paris Peace Treaties are signed by Italy, Romania, Hungary, Bulgaria, Finland and the Allies of World War II.
April 9 » United Nations Security Council Resolution 22 relating to Corfu Channel incident is adopted.
July 6 » The AK-47 goes into production in the Soviet Union.
August 15 » India gains Independence from British rule after near 190 years of British company and crown rule, and joins the Commonwealth of Nations.
November 2 » In California, designer Howard Hughes performs the maiden (and only) flight of the Hughes H-4 Hercules (also known as the "Spruce Goose"), the largest fixed-wing aircraft ever built.
November 13 » The Soviet Union completes development of the AK-47, one of the first proper assault rifles.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I100977.php : accessed October 14, 2026), "Henderikus Veenstra (1884-1947)".
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